pw_software_update: Disable spurious Pylint error
pw_software_update: Disable spurious Pylint error

Pylint sometimes reports the error:

  pw_software_update/py/py.generated_python_package/pw_software_update/keys.py:92:46: E1101: Instance of '_RSAPublicKey' has no 'curve' member (no-member)

This warning is incorrect (the curve member is used on the previous
line). Disable this warning on this line for now.

Bug: 572
Change-Id: Id344fc390d7ecf4ec97ef94f8c2fcf37f782838e
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/70301
Reviewed-by: Ted Pudlik <c7372cc3e451acc046049fca9e050bcb2a4a3d11@google.com>
Reviewed-by: Ali Zhang <101974175ff73f104389b21e58229a7713cff21f@google.com>
Commit-Queue: Wyatt Hepler <cca3bedb37979eacd157a9bceb473582df8aea1e@google.com>

google/pigweed,google/pigweed,google/pigweed,google/pigweed,google/pigweed,google/pigweed,google/pigweed,google/pigweed,google/pigweed,google/pigweed